Automatic under-water torch lighter



Feb. 28, 1939. A. BARNA AUTOMATIC UNDER-WATER TORCH LIGHTER Filed June28, 1937 UNITED STATES cxamml PATENT OFFICE AUTOMATIC UNDER-WATER TORCHLIGHTER Andrew Barns, Chicago, Ill. Application June 28, 1937, SerialNo. 150,772

I 1 Claim. (01. 158-274) This invention relates to a novel and improvedunder water torch lighter which permits the torch to relightautomatically under water.

The main object of the invention is to remove the chances of having thetorch extinguished under the water and force the driver to come to thesurface for reigniting same.

Another object of the invention is to enable the owner of any standardcutting torch to change same quickly for the use of cutting under water.

Another object of the invention is to provide a torch lighter which issimple in construction and replaced with minimum cost.

With the foregoing and other objects in view,

which will appear as the description proceeds, the

invention consists in certain novel features of construction andarrangements of parts hereinafter more fully described, illustrated inthe accompanying drawing, and particularly pointed out in the appendedclaims, it being understood that various changes in the form,proportion, size and minor details of the structure may be made withoutdeparting from the spirit or sacrificing any of the advantages of theinvention. I have illustrated in the accompanying drawing a preferredembodiment of the invention, from an inspection of which, whenconsidered in connection with the following description, the invention,its mode of construction and assembly, and many of its advantages, shallbe readily understood and appreciated.

Referring to the drawing in which similar characters of reference areemployed to indicate corresponding parts throughout the several figuresof the drawing:

Figure 1 is a longitudinal sectional view on line I-I of Figure 2.

Figure 2 is a top view of the instrument.

Figure 3 is a view of the igniting element.

Figure 4 is a top view, showing the arrangement of the multiple ignitingelements.

The said torch lighter consists essentially of a shield I, which has atits upper end the recesses 2, to permit the gases, generated during thecutting process to escape. The igniting element 3, is secured to any oneor all of the projections 4. The lower end of the shield I, has anenlarged part 5, with an internal thread 6, to receive the exteriorthreads I, of the projection 8, of the adapter 9, has an internalthreaded part II), to permit to join it to the torch body. II, is anintegral branch with the shield I, for the air supply, housing a passageI3, and an internal threaded part I2, to permit joining it to the airline.

In applying the automatic under water torch lighter to the standardtorches, first the nut holding the torch tip I4, to the torch body isremoved and the adapter 9, is screwed on in its place. To the projection8, of the adapter 9, the shield I, is secured permanently.

Between the top I5, of the torch tip I, and the igniting element 3,there is an air gap I6, to enable the element 3, to become white hot, bymeans of the gas mixtures which are passing through the holes II, of thecutting torch tip I4. Between the tip I4, and the shield I, there is anair space I8, to protect the torch tip I4, from being chilled by thewater.

In applying the automatic under water torch lighter to do under waterwork, after the gas and air supply is opened up under pressure, themixture issued at the top of the tip is ignited on the free air. Whenthe igniting element becomes white hot then the torch can be immersedunder water to do the work without interruption. If for any reason, thetorch should become extinguished, it quickly reignites by means of thewhite hot condition of the igniting element.

What I claim as new and desire to secure by Letters Patent is:

A device for use in combination with an oxyacetylene torch, comprising ashield adapted to- ANDREW BARNA.

